The Yamaha RX10 Apex high beam and low beam headlight bulbs both utilize a 9003 bulb size. The replacement chart covers vehicle production years spanning 2006 to 2017.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Yamaha RX10 Apex uses the 9003 bulb size for both its high beam and low beam headlight positions across the 2006-2017 model range.
The 9003 is an ANSI-standardized bulb designation used in the United States and Canada, distinguishing it from the functionally similar H4 designation used in international markets.
The 9003 is a dual-filament halogen bulb, meaning a single bulb contains two separate filaments: one rated at 60 watts for the high beam and one rated at 55 watts for the low beam.
The 9003 operates on a 12-volt electrical system, which is standard for most powersport and automotive lighting applications.
The bulb uses a P43t base, which is a bayonet-style mount with a 43mm flange. This base type is what physically locks the bulb into the headlight housing.
Because the same 9003 bulb serves both the high beam and low beam positions on the RX10 Apex, the vehicle requires only one bulb type per headlight unit rather than separate bulbs for each function.
The 9003 and H4 share the same P43t base and dual-filament configuration, but they are not always interchangeable due to differences in filament positioning that can affect beam pattern alignment in housings designed for one standard specifically.